he Prestige 520 has big shoes to fill. She’s the model expected to replace the Prestige 500/500 S, a market leader for seven years with more than 450 hulls delivered. Most builders in Prestige’s situation would do little more than a face-lift. A tweak here and a tweak there. Why mess with success? To my surprise, the French builder did a whole lot more than tweak. To create the 520’s profile, Garroni Design (which also penned the interior) used 50 percent more glazing than Prestige had on the 500. The side windows extend nearly down to deck level at one point, 3 feet 7 inches from top to bottom on the inside, and there are hullside windows and a transom window. On the outside, all of that side glass is flush, so from a little ways off, each side looks like it’s built with one big pane. Another outside evolution is the foredeck, which is double the size of the 500’s thanks to the snubbing of the 520’s bow. The space allows for a sun pad that measures 6 feet at the head, 5 feet 3 inches at the bottom, and well more than 7 feet long, with a pull-up sunshade.